Device for imprinting photographic plates, films, and the like



Dec. 21 1926.

L WQLF DEVICE FOR IIVIFRINTING PHOTOGRAPHTG PLATES, FILMS, AND THE LIKE Patented Dec. 2l, 1926.

UNITED STATES l.,511,50l PATENT OFFICE.v

JACQUES XVOLF, OF BASEL, SW'ITZERLAND.

DEVICE FOR Ill/[PRINTING PHGTOGRAPHC FLTES, FLMS, ANI) THE LIKE.

Application filed .Tune 11, 1926, Serial No. 115,331, and in Germany June 29, 1925.

This invention relates to a device 'for imprinting thin layers or iilms oi chemical preparations supported on a carrier such as a glass plate, band and the like, and particularly to imprinting photographic plates, films and the like.

According to the invention the device operates in melting the thin layer or film on the carrier by the combined action of heat and pressure Without injuring the carrier, and with this object the device comprises letter, numeral or the like elements which are arranged to be heated directly or by means of interniediate elements and means for applying same by slight pressure on the photographic plate or the like so as to imprint letters or numerals in the thin layer or tilm of chemical preparation on the plate by melting the layer. The characters may be imprinted one at'ter the other or simultaneously so as to form Words, numbers or the like.

The invention Will now be described by Way of example with reference to the accompanying drawing in Which Figures l and 2 are longitudinal and cross sectional views respectively of a preferred constructional form ot the invention, 'for use for example in connection with photography.

Figure 3 being a detail view showing the mounting of the type in the type disc.

Referring now to the drawingr it will be seen that the letter 0r numeral elements a consist ol' type discs mounted in a vertically movable frame which bears, under the tension of a spring c, on a lever CZ. A stronger spring ftends to raise lever l which is arranged to be actuated by a hand lever g prov'ded With a thumb g. The type discs a, which may be adjusted rotationally as has previously been proposed by .means et arms 7L arranged to engage separately with adjusting segments 2', are provided with an electric heating device arranged axially therein.

A table 7c for supporting the photographic plate or the like to be operated on is disposed below the type discs, an apertnred cover plate m subject to the tension ot springs n being provided for holding 'the photographic plate on the table 7n.

Then the handle g is depressed the thumb g Will exert a force on lever CZ in a direction opposite to that exerted by the spring Frame Z) is therefore released and the type discs a mount-ed therein are pulled down under the tension oi spring c on to a photographic plate or the like supported under the type discs. Thus numbers, Words or the like are melted into the i'ilm on the photographic plate by the combined action of heat and pressure. Then the handle g is released, spring f overcomes spring c so that lever Z is raised together with the frame o, the cover plate m being simultaneously raised in order that the photographie plate can be Withdrawn.

The type discs are preferably so constructed, or the types are so inserted in suitable carriers that the surfaces of the types to be printed are all in the same plane parallel to the table 7c, but the types are mounted in a spring controlled manner so as to be movable within limits in a radial direction, and, in the construction shoivn, (Figure 3), perpendicularly to the surface ot' the table lo in order that any inequality in the distances of the surfaces et' the types from the axis ot the type discs is compensated for. The type the surface of which is at the greatest distance trom the axis ot the type dise is the lirst to come into contact with the photographic plate or the like, the remaining types being then permitted to be moved on by the lever g or spring c until all the types have come into Contact with the photographicI plate.

In the construction illustrated, an elastic yielding of the types is ensured by the fact that the locking balls r engaging into notches of the type discs when adjusting same are arranged together with their pressure springs p in the casing Z in such a manner with respect to the table 7c that they operate radially to the type discs and in a direction perpendicular to said table 7c.

What I claim is l. A device for imprinting photographic plates, tilms and the like, comprising adjustable type elements and means to cause them to act by combined action of heat and pressure upon the chemical preparation ot said photographic plates, films and the like for imprinting purposes.

A device ior imprinting photographic plates, lilms and the like, comprising a supporttor said plates. lilms and the like, adjustable type elements, means to heat the types of said elements and control means to produce a relative approaching mov-ement bet-Ween said type elements and said support for the purpose of imprinting` by combined action of ieat and pressure upon the chemical preparation of said photographic plates, films and the like.

A device for imprinting,` photographic plates, ilms and the like, comprising a support 'for said plates, iilms and the like, rotatablyv adjustable type discs, a common heatingdevice for the ypes of said discs and control means to produce a relative approaching movement between said type discs and said support for the purpose of imprinting by combined action of heat and pressure upon the chemical preparation of said photographic plates, films and the like.

4L. A device for imprinting photographic plates, films and the like, comprising a lower support for said plates, films and the like, separately adjustable type discs arranged above said support, a common central heating body located within said type discs and actuating means for lowering said type discs to produce infiprinting` by combined action of heat and pressure upon the chemical preparation of said photographic plates, films and the like.

In witness whereof I have hereunto signed my name this lst day of J une 1926.

JACQUES WOLF. 

